🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.74

Radius: 1.5

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 0.52 AU - 0.7 AU

Year: 303 Days

Day: 40.1 Hours

Environment

Temp: -125 °C

Axial Tilt: 16.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 271.4

Radius: 10.8

Gravity: 2.33 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 0.69 AU - 1.01 AU

Year: 498 Days

Day: 13.4 Hours

Environment

Temp: -143 °C

Axial Tilt: 21 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 45,079,509 km

• M1: 134,339 km (0.105 R)
• M2: 855,700 km (0.057 R)
• M3: 1,365,978 km (0.069 R)
• M4: 1,757,625 km (0.107 R)
• M5: 2,497,387 km (0.027 R)
• M6: 3,848,704 km (0.082 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 269.1

Radius: 10.2

Gravity: 2.59 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 2.12 AU - 2.32 AU

Year: 2103 Days

Day: 9.7 Hours

Environment

Temp: -185 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 45,079,509 km

• M1: 127,009 km (0.091 R)
• M2: 507,286 km (0.039 R)
• M3: 855,849 km (0.097 R)
• M4: 1,224,309 km (0.033 R)
• M5: 2,650,575 km (0.077 R)
• M6: 3,155,767 km (0.057 R)
• M7: 4,450,985 km (0.091 R)
• M8: 5,671,554 km (0.049 R)
• M9: 6,828,096 km (0.115 R)
• M10: 7,280,779 km (0.116 R)
• M11: 10,074,818 km (0.061 R)
• M12: 10,863,349 km (0.116 R)
• M13: 11,798,934 km (0.111 R)
• M14: 12,341,525 km (0.119 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 284.7

Radius: 14.4

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 1.77 AU - 2.93 AU

Year: 2291 Days

Day: 9.6 Hours

Environment

Temp: -200 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 45,079,509 km

• M1: 179,069 km (0.062 R)
• M2: 760,256 km (0.038 R)
• M3: 1,465,162 km (0.111 R)
• M4: 4,907,857 km (0.088 R)
• M5: 6,918,453 km (0.104 R)
• M6: 8,122,416 km (0.062 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 724.8

Radius: 12.1

Gravity: 4.95 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 2.12 AU - 2.94 AU

Year: 2559 Days

Day: 12.9 Hours

Environment

Temp: -191 °C

Axial Tilt: 5.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 45,079,509 km

• M1: 150,495 km (0.107 R)
• M2: 543,639 km (0.085 R)
• M3: 1,002,455 km (0.12 R)
• M4: 2,284,060 km (0.072 R)
• M5: 2,666,432 km (0.042 R)
• M6: 3,058,828 km (0.119 R)
• M7: 5,565,041 km (0.097 R)
• M8: 7,024,817 km (0.06 R)
• M9: 7,502,932 km (0.075 R)
• M10: 8,457,964 km (0.025 R)
• M11: 9,456,680 km (0.11 R)
• M12: 9,966,210 km (0.08 R)
• M13: 11,040,323 km (0.101 R)
• M14: 12,147,646 km (0.06 R)
• M15: 12,750,227 km (0.101 R)
• M16: 13,148,007 km (0.105 R)
• M17: 15,115,668 km (0.052 R)
• M18: 16,169,884 km (0.117 R)
• M19: 19,278,378 km (0.102 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 80.1

Radius: 12.6

Gravity: 0.5 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 3.07 AU - 4.41 AU

Year: 4599 Days

Day: 8.4 Hours

Environment

Temp: -209 °C

Axial Tilt: 28.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 45,079,509 km

• M1: 156,629 km (0.04 R)
• M2: 630,705 km (0.119 R)
• M3: 1,108,371 km (0.119 R)
• M4: 1,554,023 km (0.106 R)
• M5: 2,087,040 km (0.114 R)
• M6: 2,504,568 km (0.032 R)
• M7: 3,094,731 km (0.108 R)
• M8: 4,054,850 km (0.112 R)
• M9: 5,015,717 km (0.094 R)
• M10: 5,617,101 km (0.067 R)
• M11: 6,436,149 km (0.065 R)
• M12: 12,876,487 km (0.091 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 313.5

Radius: 14.1

Gravity: 1.58 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 3.75 AU - 4.03 AU

Year: 4878 Days

Day: 10.3 Hours

Environment

Temp: -205 °C

Axial Tilt: 6.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 45,079,509 km

• M1: 183,856 km (0.088 R)
• M2: 898,934 km (0.105 R)
• M3: 1,729,501 km (0.068 R)
• M4: 2,386,385 km (0.109 R)
• M5: 3,406,344 km (0.106 R)
• M6: 4,121,870 km (0.117 R)
• M7: 4,816,902 km (0.114 R)
• M8: 5,484,856 km (0.094 R)
• M9: 7,768,019 km (0.071 R)
• M10: 8,583,327 km (0.067 R)
• M11: 16,460,254 km (0.116 R)
• M12: 17,462,709 km (0.116 R)
• M13: 18,802,358 km (0.108 R)
• M14: 21,620,183 km (0.053 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.32 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 248.7

Radius: 6.9

Gravity: 5.22 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 5.29 AU - 7.35 AU

Year: 10102 Days

Day: 21.1 Hours

Environment

Temp: -226 °C

Axial Tilt: 115 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 45,079,509 km

• M1: 85,869 km (0.025 R)
• M2: 451,486 km (0.056 R)
• M3: 792,270 km (0.031 R)
• M4: 1,211,144 km (0.03 R)
• M5: 2,666,582 km (0.042 R)
• M6: 3,011,106 km (0.088 R)
• M7: 3,583,318 km (0.101 R)
• M8: 4,614,496 km (0.118 R)
• M9: 6,682,836 km (0.075 R)
• M10: 9,343,733 km (0.08 R)
• M11: 10,230,550 km (0.11 R)
• M12: 11,027,308 km (0.038 R)
• M13: 11,614,330 km (0.107 R)
• M14: 14,058,310 km (0.085 R)
• M15: 14,748,106 km (0.109 R)
• M16: 15,886,247 km (0.063 R)
• M17: 18,813,428 km (0.082 R)
• M18: 19,439,196 km (0.098 R)
• M19: 20,150,684 km (0.069 R)
• M20: 21,625,419 km (0.094 R)
• M21: 28,066,505 km (0.103 R)
• M22: 29,996,617 km (0.089 R)
• M23: 30,468,898 km (0.062 R)
• M24: 31,138,348 km (0.074 R)
• M25: 31,428,269 km (0.112 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 458.3

Radius: 5.4

Gravity: 15.72 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 5.12 AU - 8.38 AU

Year: 11150 Days

Day: 20.4 Hours

Environment

Temp: -215 °C

Axial Tilt: 11.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 45,079,509 km

• M1: 67,169 km (0.093 R)
• M2: 244,742 km (0.072 R)
• M3: 573,109 km (0.098 R)
• M4: 904,768 km (0.12 R)
• M5: 1,421,180 km (0.104 R)
• M6: 2,184,727 km (0.107 R)
• M7: 2,799,275 km (0.115 R)
• M8: 3,425,941 km (0.058 R)
• M9: 3,772,260 km (0.098 R)
• M10: 4,168,844 km (0.09 R)
• M11: 5,014,072 km (0.112 R)
• M12: 5,202,416 km (0.087 R)
• M13: 5,660,035 km (0.091 R)
• M14: 6,432,858 km (0.081 R)
• M15: 7,515,348 km (0.106 R)
• M16: 7,845,660 km (0.117 R)
• M17: 9,125,021 km (0.114 R)
• M18: 9,644,724 km (0.07 R)
• M19: 9,887,372 km (0.076 R)
• M20: 10,639,849 km (0.117 R)
• M21: 11,056,479 km (0.026 R)
• M22: 12,089,453 km (0.068 R)
• M23: 14,096,009 km (0.071 R)
• M24: 15,705,682 km (0.085 R)
• M25: 15,906,742 km (0.075 R)
• M26: 25,619,084 km (0.106 R)
• M27: 26,746,155 km (0.08 R)
• M28: 29,912,842 km (0.028 R)
• M29: 31,373,516 km (0.116 R)
• M30: 33,652,789 km (0.091 R)
• M31: 35,117,801 km (0.08 R)
• M32: 35,808,046 km (0.116 R)
• M33: 37,215,612 km (0.081 R)
• M34: 38,537,907 km (0.093 R)
• M35: 44,007,804 km (0.074 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 159 - 15,046 AU

Composition

Type: Cometary Reservoir

System's final boundary, containing trillions of icy planetesimals.

Gravitational Limit